The action of machine of plate material leveling

As the development of plate metalworking course of study, plank quality needs to get used to the contradiction that at present rolled steel shortage and high strenth steel use a quantity to increase place to bring. As a result of the shortage of rolled steel, enterprise of Sheet Metal Fabrication often cannot get the material character that they ask, because this needs to have stuff leveling, with improving the quality of material further. And the plank to high strenth (the demand that what basically be aimed at is auto industry) , want to obtain good flatness to need higher leveling pressure and newer leveling concept. The quality that leveling machine can improve plate ability should understand " why the quality that leveling machine can improve plate ability " this concept, want to explain leveling technology above all. Leveling machine is to be used corrective the nicety of a material and plank blemish is mechanical. The blemish in cold rolling material has fore-and-aft and curly (Coil Set) , lateral buckling (Crossbow) , screwy (Twist) bend with brim hook (Edge Camber) phenomenon. Coiling make belt when makings, can cause fore-and-aft and curly (Coil Set) with lateral buckling (Crossbow) blemish. Of coiled strip inside the outside range that exterior posture makes material to coiling produces fore-and-aft and outspread. This fore-and-aft and outspread meeting causes material transverse systole, produce lateral buckling thereby (Crossbow) . On wider material its blemish incorporate is wave edge, roll material crack and center are concave and convex. Wave edge and center are concave and convex happen on wide and weak data more. In the course that takes makings cold rolling, the blemish of rolling mill also can cause the ply of some part on material cross section lower than other place. Accordingly, material grows thinlier a bit partly at larger part, this makes wave generates in longer area. The stress that passes data of leveling technology purify for the stress in purify material, want to undertake leveling to plank. The fundamental of roller leveling is to make material has half each alternative outspread. It is under material yield point, make plank " fiber " shorter part in proportion stretchy, agree in order to obtain " fiber " length. Its implementation is to make material makes the fluctuation of circular move back and forth bend with lesser curvature radius when passing leveling machine tool, make shorter data " fiber " spin. When exporting direction to move toward leveling machine tool when board makings, fluctuation bent extent is reduced gradually, the material that because curve place acutenessly to cause,handles in order to eliminate in entrance of machine tool leveling is out of shape (graph 1) . Go up when material all " fiber " when length is almost same, plate is flat, or say " by leveling " . Graph the structural signal diagram of machine of leveling of nicety of type of 1 fourfold roller is the leveling result that achieves satisfaction, the most important is the treatment task selection that should complete according to place appropriate leveling machine tool. Below most circumstance, the board that needs leveling begins from coiled strip processing, leveling machine is very main component on product line of whole data processing. The simplest machine tool is level machine (Flattener) , amount of its leveling roller is little, the diameter is big, without any roller that prop up. But should obtain taller flatness, the leveling roller of small diameter, lesser roller span reachs the roller that prop up is indispensable to leveling roller is propped up goodly. Accordingly, what what simple level machine cannot need to material generation is enough be out of shape, cannot realize good flatness, because this is done not have,be used extensively. Current, there basically is machine tool of 3 kinds of levelings to be used extensively on foreign market: Common leveling machine, accurate leveling machine and high-powered leveling machine. Machine of these 3 kinds of leveling was used on structural design have good the leveling roller that prop up, lesser leveling roller span reachs adjustable workbench. The drive system of leveling roller is very important to the work efficiency of leveling machine tool, all leveling roller is needed by drive. The fundamental application of 3 kinds of machine tools pursues processing of 2 coiled strip sends makings on-line nicety leveling plane, leveling precision is tall, ensure machine of stable Nextpage common leveling has 7~9 leveling roller, and leveling roller diameter is bigger. They basically use in punch product line send makings line to go up (graph 2) . Although send makings line to hold the one small share that whole punch product line invests only, send makings line without reliable coiled strip processing however, also cannot achieve large quantities of economy that estimate production. Raising one of manufacturing efficiency, measure that reduce machine down time of whole product line is to want those who drop coiled strip to change time. Depend on the application of advanced automation technology, the coiled strip processing that offers in company of German A library serves makings line, of coiled strip change time is shortened greatly, change a time to be only between 2~5min, the manufacturing efficiency that sends makings line can raise 25% above. Here, leveling machine also is a when affect processing of whole coiled strip to send makings line dependability important segment. What A library company produces is newest leveling of open a book to read sends makings line " CompactFeed " can shorten not only makings roll change time, and the workbench on leveling unit can be opened, facilitating cleanness (graph 3) . Graph 3 plank send makings leveling plane " CompactFeed " the workbench on leveling unit can be opened, easily cleanness and fast unreel if material flatness demand is higher, use accurate leveling machine normally, they can remove material not only fore-and-aft and curly blemish, still can eliminate the flaw such as lateral buckling and twist. Accurate leveling machine has 9~21 leveling roller, have the roller that prop up, still have intermediate roller even. The setting of intermediate roller reduced leveling roller wear away, and the material face that the data with meeting weak cut or polish cross tatty leveling roller. This kind of structure is so called " 6 heavy roll " design. It applies to leveling two sides very sensitive or the surface cannot the material of cut, if undertake the leveling of exterior product. Current, a few old old accurate leveling machine cannot satisfy current period to be opposite the high demand of plate material quality, also mean old old leveling machine is sure to be replaced by the place of accurate leveling machine of new generation. Wait for an eyewinker to avoid plate material surface to be mixed to abandon bits by dust makings cut, design of machine of new-style and accurate leveling is assembled leveling roller changes quickly device. Take leveling roller to change the leveling quality that the leveling machine of device assured stability is reliable not only, and shortened greatly the machine down time of clean leveling roller. Additional, differ through changing leveling roller of the diameter, also enlarged product leveling limits. Machine of the 3rd kind of leveling is high-powered leveling machine, use at the applied domain with material flatness top demand. The each leveling roller of machine of this kind of leveling all props up Kun to import the position to be propped up in the round to export position from material by a group. Every roller that prop up props up the one fraction of leveling roller, issue the roller propping up of the platoon to be able to be adjusted up and down, because this is inside the width limits of whole leveling machine, the clearance of fluctuation leveling roller can be in differentia is controlled. Undertake different adjustment to leveling roller, if the center is concave and convex,can eliminate the blemish with wave edge (graph 4) . Graph 4 high-powered leveling machine, use at if wave edge and center are concave and convex,eliminating to wait for machine of blemish Nextpage leveling to basically use at the following domain of 4 kinds of treatment: Punch sends pretreatment of makings product line, coiled strip to send makings line, cut board the alone leveling that sends makings line and plank part. To the leveling of plank spare parts, leveling material is flat or spare parts, coiled strip of and rather than. Of course, treatment domain is different, different also to the leveling demand of material. Because the leveling machine that gets used to high strenth material is in what Gao Kang draws intensity material in course of study of metallic Ban metalworking use increase increasingly, the leveling of material needs greater leveling pressure. In leveling process, higher leveling pressure is sure to produce an effect to machine tool structure and leveling roller. It is indispensable that strong machine tool structure and good leveling roller are propped up, the life of the improvement of quality of this pair of leveling and machine tool is very important. If action is in the pressure on leveling machine is very great, must design effective overload protection to undertake the machine tool is protected. When material of leveling high strenth, need carries out what very high leveling pressure makes on plank to be out of shape, this can come true through reducing leveling roller span. This is why new-style leveling opportunity deploys workbench to adjust an orgnaization. Because the machine tool designs a matter, this is the only measure that reduces leveling roller span as far as possible. Of course, high-powered drive system is very important also to leveling effect and leveling efficiency. Accordingly, a library company designs the system of new generation drive that developed drive leveling roller. Among them, the EcoPlan drive system that its patent designs improved the integral performance of leveling machine greatly. Above all, leveling efficiency rose 30% , used EcoPlan drive system to reduce the torque that individual universal drive shaft needs greatly, enhanced the performance of leveling machine. Next, ecoPlan drive system was reduced wear away, reduced the life that prolonged leveling roller to the adverse effect of material thereby, even torque allocates ensured advocate drive kinetic energy gets electronic overload is protected. The change of clearance of leveling of monitoring of system of control of hydraulic pressure servo pursues machine of leveling of spare parts of plank of 5 hydraulic pressure " FlatMaster " take leveling roller to change quickly device, the leveling quality that made sure to spare parts of high strenth material stability agrees the leveling to plate ability part, the most applicable is machine of spare parts leveling (graph 5) . Current, machine of spare parts leveling applies extensively at disparate industry to machine a domain, be like industry of industry of machine of automobile manufacturing industry, project, electron and aviation. To the spare parts of high strenth, if curium piece with clutch dish, machine of leveling of hydraulic pressure spare parts is best choice. They can bring to bear on very great leveling pressure. If use mechanical leveling machine, in leveling process, as a result of the existence of mechanical public errand, the clearance between fluctuation leveling roller will increase. And after machine of leveling of servo hydraulic pressure monitors leveling clearance to increase through leveling clearance control equipment, bring to bear on through hydraulic pressure crock what a retrorse active force will assure leveling clearance is constant. Machine of new-style leveling of spare parts hydraulic pressure still deployed leveling roller to change quickly orgnaization, the cleanness that can finish leveling roller inside a few minutes conveniently and change, shortened machine down time, conduce to the leveling effect with be obtained better. In the meantime, the control system of leveling machine has parameter memory function, and handy user operates an interface, can serve the production of the user better. CNC Milling